Parallel AMR Code for Compressible MHD or HD Equations

We have developed a modern code to solve the
magneto-hydrodynamic (MHD) or hydrodynamic (HD) equations. The code
consists of several approaches for solving the MHD (or HD) by
high-resolution schemes with finite-volume and finite difference
methods. A framework that implements adaptive mesh refinement (AMR)
with nested block-structure is developed. It can handle cylindrical
and spherical geometries as orthogonal curvilinear grid as well as
the Cartesian grid. We also enhance the AMR capabilities by the
preserving the conservative quantities and preserving the divergence
free constraint for vector-field.

The code is fully parallelized with message passing interface
(MPI) and a dynamic load balancing scheme is incorporated to improve
the parallel efficiency. Our code is designed in a way that existing
codes for a single grid can be easily incorporated.